EX2F vs S100 .. IQ Comparison:

if u read the review of g1x of dpreview, it is compared with olympus xz-1. using it's large aperture to avoid using higher iso. there's not much difference between the quality of two.

if ex2f's sensor is as good s100, it's not impossible for ex2f to get same quality as nex-f3 with kitlens.